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Optical disk apparatus
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Patent number 5,572,502
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Issue date Nov 5, 1996
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Hitachi, Ltd.
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Atsuko Naruse
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G11 - INFORMATION STORAGE
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Combustion control method
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Patent number 4,622,922
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Issue date Nov 18, 1986
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Hitachi, Ltd.
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Hisanori Miyagaki
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F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
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Plant control method
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Patent number 4,577,270
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Issue date Mar 18, 1986
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Hitachi, Ltd.
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Akira Sugano
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G05 - CONTROLLING REGULATING
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